/**
 * `email-mcp update` — self-update the compiled binary from GitHub Releases.
 *
 * Checks the latest release, and when it is newer downloads the matching
 * platform archive, verifies its sha256 against the release's checksums file
 * (plus a provenance attestation when the `gh` CLI is available), then
 * atomically swaps the running executable. Installs owned by a package
 * manager (npm, mise) or a dev checkout are pointed at their own upgrade
 * path instead of being overwritten.
 */
/**
 * Minimal semver ordering: numeric major.minor.patch, and any prerelease
 * ranks below its release (1.0.0-rc.1 < 1.0.0). Prerelease-vs-prerelease
 * falls back to string order — fine for "is the release newer than me".
 */
export declare function compareVersions(a: string, b: string): number;
/**
 * GoReleaser asset name for this platform. Contract (verified against the
 * live release): email-mcp_<ver>_<os>_<arch>[_musl].tar.gz, zip on windows,
 * Go-style arch names (x64 → amd64). windows-arm64 has no native build and
 * runs the amd64 one under emulation.
 */
export declare function pickAssetName(version: string, platform: string, arch: string, musl: boolean): string;
/** Parse sha256sum-format lines (`<64 hex>  <filename>`) into name → hash. */
export declare function parseChecksums(text: string): Map<string, string>;
export type InstallKind = {
    kind: 'binary';
    target: string;
} | {
    kind: 'mise';
    target: string;
} | {
    kind: 'npm';
} | {
    kind: 'dev';
};
/**
 * What kind of install is running, and (for binaries) what file to replace.
 * Reuses selfCommand()'s tri-state detection; the realpath catches binaries
 * that are symlinks into a mise install tree, which mise must keep owning.
 */
export declare function classifyInstall(execPath: string, entry: string | undefined, realExecPath: string): InstallKind;
interface UpdateOptions {
    check: boolean;
    yes: boolean;
    help: boolean;
}
export declare function parseUpdateArgs(args: string[]): UpdateOptions;
export default function runUpdateCommand(args: string[]): Promise<void>;
export {};
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